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Honda Ridgeline. Manual - part 468

０１

ＳＪＣ８Ａ００Ｋ７８２０００Ｙ１０７５ＦＡＡＴ００

−

DTC B1075:

YES

22-168

Exterior Lights

DTC Troubleshooting

UNDER-HOOD FUSE/RELAY BOX CONNECTOR J (10P)

COMBINATION SWITCH 12P CONNECTOR

HEADLIGHT
BACKUP
(WHT)

Headlight SWITCH Signal Error

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

1. Clear the DTCs with the HDS.

2. Turn the headlights switch from the OFF position to

the ON position.

3. Check for DTCs with the HDS.

Go to step 4.

Intermittent failure, the headlight circuit is OK

at this time. Check for loose or poor connections at
under-hood fuse/relay box connector J (10P), and
at the combination switch connector.

4. With the headlight switch OFF, select LIGHTING

SYSTEM from the HDS, and enter the DATA LIST.

5. Check the ON/OFF information of the HEADLIGHT

SWITCH (BACK-UP) in the DATA LIST.

Go to step 6.

Go to step 10.

6. Turn the headlight switch ON.

7. Check the ON/OFF information of the HEADLIGHT

SWITCH (BACK-UP) in the DATA LIST.

Faulty relay control module; replace the

under-hood fuse/relay box.

Go to step 8.

8. Disconnect the under-hood fuse/relay box

connector J (10P) and the combination switch 12P
connector.

9. Check for continuity between the No. 7 terminal of

under-hood fuse/relay box connector J (10P) and
the No. 4 terminal of the combination switch 12P
connector.

Faulty combination switch control unit or

relay control module; substitute a known-good
combination switch and retest. If the DTC is no
longer present, replace the original combination
switch. If the DTC is still present, the relay control
module is faulty, replace the under-hood fuse/relay
box.

Repair an open in the WHT wire.

Wire side of female terminals

Is DT C B107 5 indicated?

Is the inf or mation indicator OF F ?

Is the inf or mation indicator ON?

Is ther e continuity?

０２

−

YES

22-169

UNDER-HOOD FUSE/RELAY BOX CONNETOR J (10P)

HEADLIGHT BACKUP
(WHT)

10. Disconnect under-hood fuse/relay box connector J

(10P).

11. Check for continuity between the No. 7 terminal of

under-hood fuse/relay box connector J (10P) and
body ground.

Repair the short in the WHT wire.

Faulty relay control module; replace the

under-hood fuse/relay box.

Wire side of female terminals

Is ther e continuity?

０１

０２

ＳＪＣ８ＡＫ３Ｋ７８２０００Ｙ１０７８ＦＡＡＴ００

−

DTC B1078:

YES

22-170

Exterior Lights

DTC Troubleshooting (cont’d)

UNDER-HOOD FUSE/RELAY BOX CONNECTOR H (18P)

HEADLIGHT 3P CONNECTORS

WHT/GRN

WHT/
YEL

LEFT

RIGHT

HEADLIGHT 3P CONNECTORS

BLK

LEFT

RIGHT

RED/BLK

Daytime Running Lights Signal

Error

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

Before troubleshooting, check the No. 3 (10 A) and
No. 5 (10 A) fuses in the under-hood fuse/relay box, and
headlight bulbs.

1. Clear the DTCs with the HDS.

2. Turn the ignition switch OFF, and then back ON (II).

3. Press the parking brake pedal.

4. Check for DTCs with the HDS.

Go to step 5.

Intermittent failure. The daytime running

lights system is OK at this time. Check for loose or
poor connections.

5. Turn the headlights (high beam) ON.

Go to step 6.

Go to step 9.

6. Turn the headlight switch OFF.

7. Select LIGHTING SYSTEM from the HDS, and enter

the DATA LIST.

8. Check the ON/OFF information of the DRL

Command in the DATA LIST.

Check the BLU/WHT wire between under-

hood fuse/relay box connector H (18P) No. 10
terminal and the daytime running lights relay for an
open/short. If OK, replace the daytime running
lights relay.

Go to relay control module input test

(see page 22-125).

9. Check for continuity between the No. 3 terminal of

the headlight 3P connectors and the No. 7 (right
headlight) or No. 8 (left headlight) terminals of the
under-hood fuse/relay box connector H (18P).

Go to step 10.

Repair an open in the wire.

10. Check for continuity between the No. 2 terminal of

the left headlight 3P connector and body ground.

Faulty relay control module; replace the

under-hood fuse/relay box.

Check the daytime running lights relay (left

headlight only) (see page 22-75). If the relay is OK,
repair an open in the wire or poor ground (G301 left
side or G401 right side).

Wire side of female terminals

Is DT C B107 8 indicated?

Do both headlights come on?

Is the inf or mation indicator ON?

Is ther e continuity?

ＳＪＣ８Ａ００Ｋ７１３０００Ｙ１２５５ＦＡＡＴ００

ＳＪＣ８Ａ００Ｋ７１３０００Ｙ１２７５ＦＡＡＴ１０

−

DTC B1255:

DTC B1275:

YES

YES
NO

YES

22-171

Combination Switch Control Unit

Lost Communication With MICU (MICU
message)

Headlight Switch OFF Position

Circuit Malfunction

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch OFF, and then back ON (II).

3. Check for DTCs with the HDS.

Go to step 4.

Intermittent failure, MICU is OK at this time.

Check for loose or poor connection at combination
switch control unit connector (12P), and at under-
dash fuse/relay box connector X (39P). If the
connections are good, check the battery condition
(see page 22-74) and the charging system.

4. Check for DTCs with the HDS.

Go to MICU input test (see page 22-117).

The combination switch control unit is faulty;

replace the combination switch.

NOTE: If you are troubleshooting multiple DTCs, be
sure to follow the instructions in B-CAN System
Diagnosis Test Mode A (see page 22-99).

1. Clear the DTCs with the HDS.

2. Turn the ignition switch OFF, and then back ON (II),

and wait for 2 seconds.

3. Turn the parking (SMALL) light switch ON and wait

for 2 seconds.

4. Turn the headlight switch (LOW) ON and wait for

2 seconds.

5. Change the dimmer switch position from low beam

to high beam and wait for 2 seconds.

6. Check for DTCs with the HDS.

Go to step 7.

Intermittent failure, the headlight switch and

the combination switch control unit are OK at this
time. Check for loose or poor connections at the
headlight switch connector, and at the combination
switch connector.

7. With the headlight switch OFF select LIGHTING

SYSTEM with the HDS, and enter DATA LIST.

8. Check the ON/OFF information of the HEADLIGHT

SWITCH OFF in the DATA LIST.

Faulty combination switch control unit.

Replace the combination switch.

Go to step 9.

9. Do the headlight switch test (see page 22-181).

Repair the wire between the No. 5 terminal of

the headlight switch 6P connector and the No. 5
terminal of the combination switch 12P
connector.

The combination switch control unit is faulty;

replace the combination switch.

Is DT C B1255 indicated?

Ar e DT Cs B1055, B1106, and B1157 also
indicated?

Is DT C B127 5 indicated?

Is the inf or mation indicator ON, and change to
OF F when the headlight switch is put to the
PARK ING and the HEADLIGHT positions?

Is the headlight switch test OK ?

Content .. 466 467 468 469 ..